2021 AUDI A6 brake sensor

4K0012721BE
Driver assistance

— Audi pre sense basic can react during emergen-
cy and dangerous braking maneuvers and un-
stable driving situations (such as oversteering
or understeering).
— Audi pre sense front) can detect an impending
frontal impact and react with warnings, braking
interventions, and preemptive safety measures
for the vehicle occupants.
— Audi pre sense rear monitors the rear traffic
behind your vehicle and can react to an impend-
ing rear impact.
— Audi pre sense side can detect an impending
side impact from cross-traffic and vehicles com-
ing from the side, and can initiate preemptive
safety measures.
— The swerve assist can help you to steer the ve-
hicle around an obstacle during an evasive ma-
neuver that is detected as critical.
— The turn assist can detect vehicles in the oppo-
site lane as critical during a turning maneuver
and react with braking maneuvers.
ONT olga met Tn Lehr
Applies to: vehicles with Audi pre sense
Depending on the vehicle speed and the vehicle
equipment, the following functions may be initi-
ated in certain situations:
— Visual and audio warnings
— Reversible tensioning of safety belts
— Closing the windows and panoramic glass roof
— Adjusting the seats
— Other preemptive safety measures by individual
systems

Z\ WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 122.
G) Tips
— Depending on the risk situation that is de-
tected and the selected Audi drive select*
mode, not all preemptive safety measures
may be initiated under certain circumstan-


D_ This is not available in some countries.
ces. Certain functions can be adjusted or
skipped if necessary.
— Audi pre sense may be restricted or unavail-
able under certain circumstances, for exam-
ple if:
— There are passengers with unfastened
safety belts
— After turning on the ignition, as long as
the & indicator light is on.
— When driving in reverse.
— There is an airbag control module mal-
function
— System functions may not be available if
the ESC is limited or switched off, or if
there is a malfunction.
Audi pre sense basic
Applies to: vehicles with Audi pre sense basic
Audi pre sense basic is automatically active at
speeds of approximately 20 mph (30 km/h) and
higher. Audi pre sense basic can trigger preemp-
tive safety measures during emergency braking
and dangerous braking maneuvers as well as in
unstable driving situations, such as oversteering
or understeering > page 151, Audi pre sense pre-
emptive safety measures.
The message Audi pre sense Bo will warn you
about the danger.

ZA WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 122.
ONT Reel g
Applies to: vehicles with Audi pre sense front


Within the limits of the system, Audi pre sense
front can warn about an impending front end col-
lision and brake the vehicle strongly, if necessary.
The system uses the camera behind the wind-
shield and is available at speeds above approxi-
mately 6 mph (10 km/h).
151

Driver assistance

Driving situations
The situations to which the system reacts de-
pends on the vehicle speed.
Up to speeds of approximately 50 mph
(85 km/h), the system may react to the following
situations:
— Pedestrians and cyclists in your lane
Up to speeds of approximately 155 mph
(250 km/h), the system may react to the follow-
ing situations:
— A vehicle driving ahead clearly applies the
brakes
— When approaching a vehicle ahead that is clear-
ly traveling more slowly
— When approaching a stationary vehicle
Prewarning
To warn about detected dangers, Audi pre
sense o will appear in the instrument cluster
and an audio signal will sound.
A brief application of the brakes
If a collision is imminent, there may be an acute
warning using a brief application of the brakes.
You will also be warned about the danger by an
indicator in the instrument cluster display. You
may only be able to avoid a collision by swerving
or braking strongly.
Automatic braking force increase
If there is an impending collision and you are not
applying the brakes enough, the braking force
may be increased, depending on the situation.
Automatic braking
If you do not react to the acute warning, the sys-
tem may apply the brakes with strong braking
force within the limits of the system in order to
reduce the speed of impact in the event of a colli-
sion.
If the brakes were applied until the vehicle stop-
ped, © Please take over! will appear in the in-
strument cluster and you must take over control
of the vehicle.
152

ZA WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 122.
— Audi pre sense front cannot overcome natu-
ral physical laws. It is a system designed to
assist and it cannot prevent a collision in ev-
ery circumstance. The driver must always in-
tervene. The driver is always responsible for
braking at the correct time. Do not let the
increased safety provided tempt you into
taking risks. This could increase your risk of
a collision.
— Audi pre sense front does not react to cer-
tain objects, such as animals, crossing or on-
coming vehicles, bars, railings, or railcars.
— Audi pre sense front may be limited or un-
available when driving in curves.
— Loose objects can be thrown around the ve-
hicle interior during sudden driving or brak-
ing maneuvers, which increases the risk of
an accident. Store objects securely while
driving.
ONT Tee
Applies to: vehicles with Audi pre sense rear

Within the limits of the system, Audi pre sense
rear uses data from radar sensors at the rear cor-
ners of the vehicle and calculates the probability
of a rear-end collision with the vehicle behind
you.
Audi pre sense preemptive safety measures can
be initiated if the risk of a collision with the vehi-
cle behind you is detected.

ZA WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 122.
— Audi pre sense rear does not react to pedes-
trians, animals, crossing objects, and ob-
jects not detected as vehicles.

4K0012721BE
Driver assistance


— The exit warning system does not respond
to people and cannot warn you about every
type of approaching objects, such as cyclists.
Always monitor the traffic as well as the ve-
hicle's surroundings with direct eye contact.
— The display may not appear in time when
vehicles are approaching very quickly.
— The exit warning system does not react to
stationary objects or pedestrians.
— The exit warning system will not provide
alerts if your vehicle is pulled too far into
the parking space so that it is hidden by ad-
jacent vehicles.

G) Tips
— The exit warning system can be available for
up to approximately three minutes after un-
locking the vehicle and opening the door as
well as after switching off the ignition. Then
the displays flash briefly and the system
switches off.
— The coverage areas of the sensors > fig. 114
are diagrams and do not represent a true-
to-scale image of the sensor ranges.
— The system complies with United States FCC
regulations and ISED regulations
> page 311.
Intersection assistant

Applies to: vehicles with intersection assistant

Fig. 116 Detected cross-traffic
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Fig. 117 Instrument cluster: directional display from the
intersection assistant
General information
The intersection assistant can warn the driver of
approaching cross traffic in complex intersections
> fig. 116.
The system monitors intersections and exit
ramps using the sensors installed in the vehicle
that detect the front and side areas around the
vehicle. Moving objects that are approaching
from behind, such as cars, are detected within
the limits of the system > A\. The system can al-
so warn the driver of a potential collision with de-
tected approaching cross traffic in intersections
and exit ramps with poor visibility.
Requirements for using the intersection
assistant:
— The speed must not be higher than approxi-
mately 18 mph (30 km/h).
— The “D” gear is selected.
Displays, warnings, and braking
— Display: the red arrow (@) can indicate the direc-
tion from which the cross traffic is approaching.
The indicator in the upper display only appears
when the parking aid is activated. For vehicles
with peripheral cameras only in the Front and
Front corner camera views. The display only ap-
pears in the instrument cluster > fig. 117 when
the Driver assistance display is open in the on-
board computer > page 17.
— Warnings: the message Cross traffic! @ can
warn about critical cross-traffic when driving
forward. There may also be an audible signal.
— Automatic brake activation: if you do not react
to a warning, a brief braking by the system can
warn you of a potential collision with an
157
>

Driver assistance

approaching object when driving forward at
speeds up to approximately 6 mph (10 km/h).
Switching the intersection assistant on and
off
— The system can be switched on and off in the
MMI > page 125.
Messages
if or » is displayed when there is a mal-
function, the intersection assistant functions
may be unavailable or may be limited.
A message that indicates the cause and possible
solution may appear with some displays. The
weather conditions may be too poor or a sensor
may be covered. Clean the area in front of the
sensors > page 124 and try to turn the system on
again later.
If the malfunction remains, drive to an author-
ized Audi dealer or authorized Audi Service Facili-
ty immediately to have the malfunction correct-
ed.

ZA WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 122.
— The intersection assistant will not provide
alerts about people and cannot warn you
about every type of approaching objects,
such as cyclists. Always monitor the traffic
as well as the vehicle's surroundings with di-
rect eye contact.
— The system may not react if vehicles are ap-
Proaching very fast.

G) Tips
— The coverage areas of the sensors > fig. 116
are diagrams and do not represent a true-
to-scale image of the sensor ranges.
— The system complies with United States FCC
regulations and ISED regulations
=> page 311.

) This function is not available in every market and on all ve-
hicle equipment levels.
158
Emergency assist
Applies to: vehicles with emergency assist
General information
Within the limits of the system, emergency assist
can detect inactivity from the driver. In these in-
stances, the system will warn the driver, assume
control of the vehicle if necessary, and bring the
vehicle automatically to a stop in the lane.
Regardless of the speed, the emergency assist is
automatically available when the adaptive cruise
assist* is activated. When the adaptive cruise as-
sist* is deactivated, the system is only available
at speeds above approximately 40 mph
(65 km/h).
Emergency assist functions
Measures may be initiated in stages. The vehicle
can be controlled with the limits of the system.
The measures depend on the dangerous situation
and the vehicle equipment:
— Visual and audio warnings
— Vehicle control
— Reduction of vehicle speed in stages
— Lowers the volume of the Infotainment system
— Tugs on the safety belt
— Activates the brakes
— The emergency flashers are activated
— Audi pre sense preemptive safety measures are
triggered > page 151
— The brakes are applied until the vehicle is sta-
tionary
As soon as the vehicle comes to a full stop, the
vehicle prepares for the vehicle passengers to be
rescued. The parking brake is set, “P” gear is en-
gaged, the doors are unlocked, and the interior
lighting is activated. The emergency call?) will be
started if necessary once the vehicle has been
stationary for several seconds.

4K0012721BE
Driver assistance

Display
If /3\ is displayed for example, the emergency
assist is active.
Overriding the emergency assist
You can override emergency assist as follows
oA:
— Move the steering wheel. Or
— Press the brake pedal. Or
— Press the accelerator pedal distinctly.
When stationary, you can end the emergency as-
sist by leaving the "P" position or releasing the
parking brake > page 107.
Switching the emergency assist on and off
The system can be switched on and off in the
MMI > page 125.
Messages
1g or Eis displayed when there is a malfunc-
tion, the emergency assist functions may be un-
available or may be limited.
A message that indicates the cause and possible
solution may appear with some displays. The
weather conditions may be too poor or a sensor
may be covered. Clean the area in front of the
sensors > page 124 and try to turn the system on
again later.
If the malfunction remains, drive to an author-
ized Audi dealer or authorized Audi Service Facili-
ty immediately to have the malfunction correct-
ed.

ZA WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 122.
— The emergency assist is an assist system
that should only be used in cases of emer-
gency to take over control of the vehicle and
bring it to a stop.

@) Tips
— Depending on the severity of the detected
situation, not all safety measures will be ini-
tiated. Certain functions can be adjusted or
skipped if necessary.
— If the emergency assist was triggered, it will
only be available again after a brief period.
159

4K0012721BE
Parking and maneuvering

General information
The parking aid assists when parking and maneu-
vering by providing warnings about obstacles. If
the ultrasonic sensors on the vehicle > page 123,
fig. 89 detect an obstacle, the system will pro-
vide audio and visual warnings.
Activating and deactivating
Requirement: the vehicle speed must be under
approximately 6 mph (10 km/h).
> Press the Pvt or { button @ in the center con-
sole. When activating, a brief tone will sound
and the LED in the button will turn on.
Automatic activation
> The system activates automatically when re-
verse gear is engaged while the engine is run-
ning. A brief tone will sound.
> If Automatic activation is switched on in the
MMI and if the vehicle approaches an obstacle
at speeds below approximately 6 mph (10
km/h), the parking aid will switch on automati-
cally. Audible signals will sound once the obsta-
cle is within the sensor detection area.
> Applies to: MMI: To switch Automatic activa-
tion on or off, select on the home screen: VEHI-
CLE > Parking aid > Automatic activation.
Automatic deactivation
The distance indicator for the parking aid plus
will deactivate automatically when driving for-
ward faster than 6 mph (10 km/h).

Z\ WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 122.

@) Note
Keep enough distance from the curb to avoid
damage to the rims.
@) Tips
— If the parking aid is deactivated, it can only
be reactivated automatically when one of
the following conditions is met:
— The vehicle speed exceeds 6 mph
(10 km/h)
— The ignition is switched off and back on
again
— The parking brake is set and then released
— The “P” gear is engaged and released
again
Applies to: vehicles with parking aid plus

Fig. 119 Upper display: distance indicator
If the sensors detect an obstacle, audible and vis-
ual signals will warn you.
Visual warnings
The visual warnings in the upper display help you
to detect the critical vehicle area and to estimate
the distance to an obstacle.
Red segments (2) show detected obstacles that
are in your vehicle's path. The red lines @) mark
the expected direction of travel based on the
steering angle. A white segment @) indicates a
detected obstacle that is outside of the vehicle's
path. The closer your vehicle comes to the obsta-
cle, the closer the segments will move to the ve-
hicle. The collision area has been reached when
the next to last segment is displayed. Obstacles
in the collision area, including those outside of
the vehicle's path, are shown in red. Do not con-
tinue driving farther.
Audio signals
The closer your vehicle gets to a detected obsta-
cle, the shorter the time between the audible sig-
nals. A continuous tone sounds when an obstacle
is less than approximately 1 foot (0.30 m) away
from the front or rear of the vehicle. A continu-
ous tone sounds when an obstacle is less than
approximately 0.7 feet (0.20 m) away from the
161
>

4K0012721BE
Parking and maneuvering

Rear cross-traffic assist
Applies to: vehicles with rear cross-traffic assist
3 s
&
= st a

Fig. 125 Upper display: rear cross-traffic assist display
General information
The rear cross-traffic assist monitors the area be-
hind and next to the vehicle using radar sensors
at the rear corners of the vehicle. The system can
detect moving objects that are approaching, such
as vehicles > fig. 124. A display in the MMI and
various warnings provide assistance when exiting
a parking space.
Requirements for using the rear cross-traffic
assist:
— The parking system is switched on > page 160.
— Reverse gear must be engaged and the speed
while driving in reverse must not be higher than
6 mph (10 km/h).
Displays, warnings, and braking
— Display: the display @ appears only when the
parking aid is active. In vehicles with peripheral
cameras, the display only appears in the Rear
and Rear corner camera views. Arrows show the
direction from which the cross traffic is ap-
proaching.
— Audible warnings: an audio signal may sound
as an additional warning when driving in re-
verse.
— Automatic brake activation: if you do not react
to a warning, a brief braking by the system can
warn you of a potential collision with an ap-
proaching object.
The audible warning signal and the automatic
brake activation occur only when driving in re-
verse.
Switch rear cross-traffic assist on and off
— Applies to MMI: Select on the home screen: VE-
HICLE > Parking aid > Rear cross-traffic assist.
Or
— Select |--| > Rear cross-traffic assist in the upper
display when the parking aid is active.


Messages
re or >% is displayed when there is a mal-
function, the rear cross traffic assist functions
may be unavailable or may be limited.
A message that indicates the cause and possible
solution may appear with some displays. The
weather conditions may be too poor or a sensor
may be covered. Clean the sensor area in the ve-
hicle rear and try to turn the system on again lat-
er.
If the malfunction remains, drive to an author-
ized Audi dealer or authorized Audi Service Facili-
ty immediately to have the malfunction correct-
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 122.
— The rear cross-traffic assist will not provide
alerts about people and cannot warn you
about every type of approaching objects,
such as cyclists. Always monitor the traffic
as well as the vehicle's surroundings with di-
rect eye contact.
— The system may not react if objects are ap-
proaching very quickly.
— The rear cross-traffic assist will not provide
alerts if your vehicle is parallel parked or if



167

Parking and maneuvering


your vehicle is pulled too far into the park-
ing space so that it is hidden by adjacent
vehicles.



— Once an automatic brake activation occurs,
the system cannot initiate another activa-
tion for several seconds.
— System functions may not be available if the
ESC is limited or switched off, or if there is a
malfunction.
— If there is an acoustic warning signal from
the rear cross-traffic assist, then the park-
ing aid may not warn you of detected obsta-
cles under certain circumstances.
— The coverage areas of the sensors > fig. 124
are diagrams and do not represent a true-
to-scale image of the sensor ranges.
— The system complies with United States FCC
regulations and ISED regulations
=> page 311.
Assisted parking
General information
Applies to: vehicles with assisted parking

If your vehicle is equipped with park assist plus
or remote park assist plus, these systems will
help you to find suitable parking spaces. Parking
spaces are measured using ultrasonic sensors on
the sides of the vehicle. Depending on vehicle
equipment, the laser scanner may also improve
the measurement.
If a parking space is found, the systems will help
you to park while the driver monitors the vehi-
cle's surroundings with the parking aids, cam-
eras*, and direct eye contact.

Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 122.


D_ Only remote controlled parking.
168


Fig. 127 Overview of parking options in garages
Depending on the vehicle equipment, the follow-
ing parking options may be available:
Backing into parallel parking spaces
Backing into perpendicular parking spaces
Driving forward into perpendicular parking
spaces that you have already driven past
Driving forward into perpendicular parking
spaces if you have already driven to the space
yourself and the front of the vehicle is al-
ready in the space
®
©80
One-car garages») ©